It is fair to say that the Sigma 85mm f1.4 is nothing special regarding bokeh. It's only real plusses are the extra 2/3rds of a stop compared to the 85mm f1.8 and the lower price compared to the 85mm f1.2 L.

It is an ok lens, obviously, and not better than the Canon EF 85mm f1.8 USM. Side by side, the Canon EF 85mm f1.8 USM has nicer bokeh.

They 70-200 IS L is by far better regarding sharpness and contrast.

The* 70-200mm f4 L IS USM is a bit better regarding sharpness (but not all that much, the 70-200mm f4 L USM is no slouch), and worse regarding MFD work and bokeh. It's other plusses are weather sealing and IS. The non-IS is a fine lens in its own right, and (lack of) contrast is not one of its problems.

Instead of saying nonsense to my comments you should gain some experience. "Second hand knowledge" is the main problem in forums.